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ASTM D1109-21

Current Revision

Standard Test Method for 1 % Sodium Hydroxide Solubility of Wood

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1.1 This test method covers the determination of the solubility of wood in a hot dilute alkali solution. A1 % solution of sodium hydroxide (NaOH) is used. One application is in determining the degree of fungus decay that has taken place in a given wood sample. As the wood decays, the percentage of alkali-soluble material increases in proportion to the decrease in pulp yield caused by the decay.

1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


2.1 Hot alkali extracts low molecular weight carbohydrates consisting mainly of hemicellulose and degraded cellulose in wood. This solubility of wood is an indication of the degree of fungal decay, or degradation by heat, light, oxidation, and so forth. The more decay or degradation, the higher the solubility.

SDO ASTM: ASTM International
Document Number D1109
Publication Date April 1, 2021
Language en - English
Page Count 2
Revision Level 21
Supercedes
Committee D07.01
Publish Date Document Id Type View
April 1, 2021 D1109-21 Revision
Aug. 1, 2013 D1109-84R13 Reaffirmation
April 1, 2007 D1109-84R07 Reaffirmation
Sept. 10, 2001 D1109-84R01 Reaffirmation
April 27, 1984 D1109-84R95E01 Reaffirmation